[root@localhost ~]# python
Python 2.7.5 (default, Apr 11 2018, 07:36:10)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-28)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import MySQLdb
>>> db = MySQLdb.connect(host='127.0.0.1',user='root',passwd='xukeng',db='real_name',charset='utf8')
>>> cursor = db.cursor()
>>> cursor.execute('select * from test limit 2')
2L
>>> db = MySQLdb.connect(host='192.168.0.50',user='root',passwd='xukeng',db='real_name',charset='utf8')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib64/python2.7/site-packages/MySQLdb/__init__.py", line 81, in Connect
return Connection(*args, **kwargs)
File "/usr/lib64/python2.7/site-packages/MySQLdb/connections.py", line 193, in __init__
super(Connection, self).__init__(*args, **kwargs2)
_mysql_exceptions.OperationalError: (1045, "Access denied for user 'root'@'192.168.0.50' (using password: YES)")
------------
看不明白为什么换了一个HOST地址就登入不了，都是在本机。接着忽然想到是不是数据库的用户权限限制了。
接着登入数据库查看
MariaDB [real_name]> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
MariaDB [mysql]> select user,host from user;
+-----------+-----------------------+
| user | host |
+-----------+-----------------------+
| newdbuser | % |
| root | 127.0.0.1 |
| root | ::1 |
| root | localhost |
| root | localhost.localdomain |
+-----------+-----------------------+
5 rows in set (0.00 sec)
果然，ROOT用户没有外网登入的权限
换了一个用户 NEWDBUSER
>>> db = MySQLdb.connect(host='192.168.0.50',user='newdbuser',passwd='db123456',db='real_name',charset='utf8')
>>>
OK，没问题